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surely this could be a software fix: tell usb driver to use special mode that is only allowed to use data line to negotiate power levels, before you plug into a
by em3rgent0rdr 13y ago
surely this could be a software fix: tell usb driver to use special mode that is only allowed to use data line to negotiate power levels, before you plug into an untrusted power source.
- nine_k 13y agoThat special mode code and negotiation code is what malware authors will target. For hostile / high security environments, I'd rather have it in a special charging-only hub (good luck pwning such a device) that physically lacks the data wires on the output socket.
- nickff 13y agoI believe that this is what Apple implemented with their "do you trust this computer" dialog in the newest versions of iOS.
- kabdib 13y agoNow you have to trust the driver. And depend on there not being "test modes" in the hardware that can be turned on (USB 3.0 is a pretty complex beastie; frankly, if I were a spook agency I'd want to have doors in via seldom-examined ports like USB).